Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Nomeie o número total de anos para brm straight-4
 ###Tabelas: CREATE TABLE lone_star_series (lone_star_series_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Winning Team VARCHAR, Score VARCHAR, Winning Pitcher VARCHAR, Losing Pitcher VARCHAR, Attendance INT, Location VARCHAR) CREATE TABLE complete_formula_one_world_championship_results (complete_formula_one_world_championship_results_id AUTO_INCREMENT PRIMARY KEY, Year INT, Entrant VARCHAR, Chassis VARCHAR, Engine VARCHAR, Points INT) CREATE TABLE old_northern_state_conference_membership (old_northern_state_conference_membership_id AUTO_INCREMENT PRIMARY KEY, School (IHSAA ID#) VARCHAR, Location VARCHAR, Mascot VARCHAR, # / County VARCHAR, Year Joined INT, Year Left INT, Conference Joined VARCHAR) CREATE TABLE series_10 (series_10_id AUTO_INCREMENT PRIMARY KEY, Episode VARCHAR, First aired VARCHAR, Entrepreneur(s) VARCHAR, Company or product name VARCHAR, Money requested (£) VARCHAR, Investing Dragon(s) VARCHAR) CREATE TABLE classification_of_needs (classification_of_needs_id AUTO_INCREMENT PRIMARY KEY, Need VARCHAR, Being (qualities) VARCHAR, Having (things) VARCHAR, Doing (actions) VARCHAR, Interacting (settings) VARCHAR)  
SELECT COUNT Year FROM complete_formula_one_world_championship_results WHERE Engine = brm straight-4